Abstract: Based on summary of benefit assessment experience on past meteorological service for major sports events, this paper used the meteorological service benefit assessment for 2014 Youth Olympic Games as an example to discuss and analyze topics such as selection of research object, application of social investigation methods, design of assessment indexes, control of assessment practice, etc. We summarized technical methods and experience on meteorological service benefit assessment for the major sports events. Results show that: 1) When determining assessment object, it is necessary to deeply analyze meteorological service needs of the events and cover as many key users of the events meteorological service as possible. 2) According to features of research object, qualitative and quantitative social investigation methods should be used to collect the assessment data. 3) According to the needs, purposes, behaviors and habits of research object, relevant research targets and detailed assessment indexes are determined. 4) Periods of meteorological service on major sports events are normally long. Therefore, benefits assessment by stages can be used.